this is the angle adjusters they use now, for both sections. they slide on the back bar of the seat and the foot climber.
I have been using one this year for the first time and really like it. I don't ever leave it out unless I'll be back the next day and its somewhat of a PITA unhooking, loading, etc but its okay.
I enjoy the ability to take 5 min powernaps and I agree with GB about the 360 part. Its hard enough to LOOK behind the stand much less take a shot.
But you are pretty much good to go for 180 degrees.
I'm pleased with mine and just killed a nice eight point out of it. when you hook up the cinch strap and wear a harness (actually very convenient) its rock solid. the gun holder works good too.